Hammer drill accessory



FIG. 1 is a perspective view of a hammer drill accessory showing my new design;

FIG. 2 is a right side elevational view showing the design for the hammer drill accessory of FIG. 1;

FIG. 3 is a left side elevational view showing the design for the hammer drill accessory of FIG. 1;

FIG. 4 is a top plan view showing the design for the hammer drill accessory of FIG. 1;

FIG. 5 is a bottom plan view showing the design for the hammer drill accessory of FIG. 1;

FIG. 6 is a front elevational view showing the design for the hammer drill accessory of FIG. 1; and,

FIG. 7 is a rear elevational view showing the design for the hammer drill accessory of FIG. 1.

The broken lines shown in the drawings illustrate portions of the hammer drill accessory that forms no part of claimed design. 

CLAIM The ornamental design for a hammer drill accessory, as shown and described. 